IV.   Mind Development (PSYDEV)

Adolescenceis the 4th Degree and Mind Age being from the age of twelve (12) until the ageof twenty-one (21).

Under the most advanced non-Ucadian education systems, exceptionally gifted adolescents by the age of twenty-one (21) representing less than 5\% of all university graduates are expected to know at least 36,000 words and concepts or more. However, under the Ucadian model of knowledge, at least 65\% of all adolescents of the same age are expected to know at least 72,000 concepts to a post graduate multiple PhD level competence.

The age of eleven to twelve represents the normal onset of puberty for girls, while the onset for boys is usually delayed by a period of two years to around thirteen to fourteen years of age.

Upon the onset of puberty in both boys and girls, a natural phenomenon of the species is the deliberate withdrawal from regular adult contact and significant increase in same sex, similar age contact or “peers”. This appears a common trait of most mammals and signifies a natural protection mechanism from predator or aggressive adults during the particularly vulnerable early stages of puberty.